I've always been somewhat bemused with people who are obsessed with audio or video quality (imo real music and movie fans are only obsessed about music and movies) but I never knew there was a whole scam industry built around this obsession, selling ridiculously expensive cables and other rubbish that magically makes the digitally stored music and images appear crisper. Check these Slashdot comments and especially this page for some funny examples. My favourite are the $200 CD labels that help you capture the least significant bits that get lost and never get off the disc - from the other side of the disc!